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UI
Smooth
Snowish
mail, Email, envelope
WhiteSmoke
128x128
Matte set: Basic
envelope, Message, mail
Lavender
32x32
Glyph
Token
telephone, envelope, mail
Black
Developer Kit
envelope, mail, Letter
RoyalBlue
Outline
UIDesign Icons
mail, envelope, Email
Gray
16x16
Pixel
Fugue Icons
envelope, exclamation
DarkGoldenrod
Arrow, envelope
Minus, envelope
Khaki
envelope, pencil
envelope, plus
envelope, Label
Elegant Blue Web
envelope, mail, Email
SteelBlue
64x64
Ultimate Gnome
mark, mail, Check
256x256
PNG ICO MORE
Quartz
newsletter, envelope, Email
Gainsboro
PNG MORE
BWPX
envelope
Silver
18x18
envelope, open
manilla, Bag, paper
BurlyWood
Ecqlipse 2
User Interface Icons
mail, Message, newsletter
Gold
80x80
Vaga
mail, open, envelope
envelope, Arrow
envelope, Minus
pencil, envelope